geeenleaf



UNITED STATES PATENT OFFICEo GEO. D. GREENLEAE, OF THREE MILE BAY, NEVYORK.

STOVE-PIPE DRUM.

Spcciiication forming part of Letters Patent No. 17.945, dated May 30,lta').

To all whom may 0071.081172,.-

Be it known that I, GEORGE I). GREEN- LEAEof Three Mile Bay, in thecounty of Jefferson and State of N ew York7 have invented a new andImproved Heat-Radiator for Stoves; and I do hereby declare that thefollowing isa full, clear, and exact description thereof, which willenable those skilled in the art to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecication, in which- Figure 1 is a vertical central section of myinvention; Fig. 2, a horizontal section of the same, taken in the line.fr w,'Fig. l.

Similar letters of reference indicate correspending parts. A

This invention relates to a new and improved heat-radiator to be appliedto stovepipes for the purpose of radiating the heat, which wouldotherwise escape intothe chimney.

The invention consists in a novel arrangement of draft passages or rinesplaced within a drum,and provided with dampers in such a manner thateither a direct or sinuous draft may be obtained within the drum, asrequired.

A represents a drunnwhich may be of cylindrical or oval form, the latterbeing preferable. This drum is provided at its upper and lower ends withcollars B, to receive the joints or pieces of stove-pipe with which thedrum communicates. Vithin this drum there are placed and permanentlysecured four within the drum A, and is in line with the collars B B, andsaid flue a has a damper, C, at its upper and lower ends, the twodampers working on pivots c at the centersof their ends, and connectedby arms d with a vertical rod, D, the lower .end of which projectsthrough the bottom of the drum. By thus connecting these dampers theyare both moved simultaneously by actuating the rod D. When the dampers Care open, a direct draft is obtained through the flue a, as indicated bythe dotted arrows in Fig. 1,and when the dampers are closed asinuousdraft is obtained, the pro-y ducts of combustion passing up through iluea" into the upper part of flue a, down the latter into the lower end ofiiue c, up the latter into the upper end of iiue am', and down ilue 60into the lower end of iiue am, and up said iiue into the stove-pipe, asindicated by the solid arrows. By this arrangement avery ci rcuitousdraft is obtained and a large amount or volume of heat radiated into theapartment in which the drum is placed, and at the same time, when adirect and strong draft is required-as in kindling a fire, forinstanceit may, by a simple adjustment ofthe dampers, be obtained.

I claim as new and desire to secure by Letters Patent- The combination,in heat-radiators for stoves, of the drum A, iues a a a am aw, :arms dd, 'and rod D, substantially as and for the pun poses set forth.

GEo. D. GREENLEAE.

